An unexpected love quadrangle as two classmates, begin to fall for each other when their best friends have fallen for them.
KAITO began his manga career at the age of 20, when his one-shot "Happy Magi" debuted in Weekly Shonen Jump. He published the series Cross Manage in 2012. In 2015, he returned to Weekly Shonen Jump with Buddy Strike. KAITO started work on Blue Flag in Jump+ in 2017.